ProSoft Technology 5204-DFNT-PDPMV1 - Manual (Page 77)

PDPMV1 ♦ ProLinx Gateway Mailbox Messaging
PROFIBUS DPV1 Master Protocol Manual
ProSoft Technology, Inc. Page 77 of 157
March 23, 2011
3.2 Special Function Mailbox Messaging Commands
The PDPMV1 gateway supports some extended PROFIBUS functions, using a
mailbox data exchange mechanism implemented in the gateway.
The PDPMV1 gateway supports the following special functions through this
mailbox messaging scheme.
Important Note: When you use the database to send your mailbox command, the application
places a value of B0 into the first byte of the Message ID word. This value identifies the mailbox
command issued, and differentiates the source of the message: either the database or the
command structure. You should use a message ID value between 1 and 255 in the message ID
header.
Initiated from ProSoft Configuration Builder
Message Description
Set Operation Mode Controls the operating state of the PROFIBUS Master
Set Slave Mode Sends special control command to one or several slaves
(Sync/Freeze)
Get Slave Diag Gest diagnostic information from a slave
Get Slave Config Gets slave configuration
Get Database Information
Get Live List Gets information from all nodes on the network
MSAC1 Read DPV1 acyclic read (Class 1)
MSAC1 Write DPV1 acyclic write (Class 1)
Start Slave Start Slaves Dynamically
Stop Slave Stop Slaves Dynamically
DPV1 Alarm Handling: Generated by Slave Devices
Message Description
Alarm Indications Spontaneous alarm indication from DPV1 slave. Structure of
data is slave-dependent
Alarm Confirmation This message is sent by the ProLinx gateway automatically as a
confirmation to the alarm indications.
The provided Function Blocks simplify the processor logic required to implement
these messaging mailbox exchanges.
Sending a mailbox message to the PDPMV1 gateway is a relatively simple
process, however, it is important to follow a certain sequence.